First of all, thank you for contributing, you are awesome!
Here are a few rules to follow in order to ease code reviews, and discussions before maintainers accept and merge your work.
You MUST run the test suite.
You MUST write (or update) unit tests.
You SHOULD write documentation.
Also, while creating your Pull Request on GitHub, you MUST write a description which gives the context and/or explains why you are creating it.